Hello everyone. All of a sudden my 7d developed an annoying habit of banding. The linked image shows exactly what is happening. I tried googling but did not find anything relevant yet. Anyone else has seen or heard of this problem or has heard of a solution?
I am glad I was shooting personal stuff. As an FYI, this is supposed to be the sky.

Unfortunately it is not a corrupted file. After Thursday pm, all the files are coming out like that. And I always reformat the cards every time I upload the files. Also, I tried with several cards, before I panicked...